DB25 pin ALDL interface cable
Thread Starter
Senior Member
Joined: Dec 2001
Posts: 731
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From: Blacksburg, VA
Car: '92 Rally Sport
Engine: LO3
Transmission: 700R4
DB25 pin ALDL interface cable
I have searched and searched on this one, but to no avail. Does anyone know what pin to use on a DB25 pin connector for the +12 volts I need that would usually be coming from pin 4 on a DB9 connector (I tried just running this to a hot wire and I think I've fried something in my serial port 
). Also, do I understand correctly that I must use a 10K resistor between ports A and B on the ALDL to recieve data?
Thanks all,
Harry
). Also, do I understand correctly that I must use a 10K resistor between ports A and B on the ALDL to recieve data?Thanks all,
Harry
Senior Member
Joined: Oct 2001
Posts: 930
Likes: 0
From: Timrå, Sweden
Car: 1984 Corvette
Engine: Turbo 350
Transmission: 4L80E with TCI T-Com
You can use a DB25
This is a page with different serial connectors:
http://www.passtimeracing.com/eric/Ref/Serial.htm
DB9 -> DB25
2 -> 3
5 -> 7
4 -> 20
You could connect the resistor to a 12V source on te car. In that case you only connect pin 3 and 7 on the DB25 connector.
This is a page with different serial connectors:
http://www.passtimeracing.com/eric/Ref/Serial.htm
DB9 -> DB25
2 -> 3
5 -> 7
4 -> 20
You could connect the resistor to a 12V source on te car. In that case you only connect pin 3 and 7 on the DB25 connector.
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